Hindu Calendar Converter: Date to Tithi, Vikram Samvat

Hindu calendar converter: Gregorian date to tithi, month and samvat

This free Hindu calendar converter turns any Gregorian date from 1800 to 2099 into its Hindu (Vikram Samvat) date: the tithi and paksha in force at sunrise with its end time, the lunar month in both the amanta and purnimanta systems, adhik maas when it occurs, the Vikram, Shaka and Gujarati samvat years with their samvatsara names, and the vara, nakshatra, yoga and karana of the day. It also converts back, from a Hindu date such as “VS 2080 Shravana Shukla Purnima” to the Gregorian date.

If you are looking for a date of birth tithi calculator, enter the birth date and, if you know it, the birth time. The tool shows the janma tithi at the moment of birth and lists the date on which the same tithi falls in any year — the “tithi birthday” many families celebrate. Like any panchang, it is for tradition and entertainment, not prediction or advice.

How to use the Hindu Calendar Converter

1. Keep Gregorian → Hindu selected and pick the Date. Add the Birth time if you want the tithi at the moment of birth.
2. Choose the Place: sunrise depends on the location, and the Hindu day starts at sunrise. The Time zone fills in from the city.
3. Read the tithi, month and samvat in the panel. The details list gives both month systems, all three eras, the vara, nakshatra, yoga, karana, sunrise and sunset.
4. Enter a year in Tithi birthday in year to see when your birth tithi falls that year.
5. For the reverse, switch to Hindu → Gregorian, choose the era, year, month, paksha, tithi and month system, and tick Adhika for the extra month.

Hindu Calendar Converter features

How the conversion works

A tithi is the time the Moon takes to gain 12° on the Sun, so there are 30 in a lunar month: Shukla Pratipada to Purnima while the Moon waxes, then Krishna Pratipada to Amavasya. A tithi lasts about 19 to 26 hours, so one can cover two sunrises (vriddhi) and another none (kshaya). A Hindu date is named by the tithi in force at local sunrise.

The month is set by the Sun. An amanta month runs from one new moon to the next and takes its name from the sidereal sign the Sun occupies at the new moon that starts it — Sun in Meena gives Chaitra, Sun in Mesha gives Vaishakha, and so on. If the Sun enters no new sign during the month, the month is adhika and repeats the next month’s name. In the purnimanta system each Krishna paksha belongs to the following month, so Ashadha Krishna in the amanta calendar is Shravana Krishna in the north. The year starts on Chaitra Shukla Pratipada: Shaka Samvat equals the Gregorian year minus 78, and Vikram Samvat equals Shaka plus 135, so 2026–27 is VS 2083 and Shaka 1948.

Worked example: on 1 August 2023 the sunrise in New Delhi was at 05:42 and the Moon was more than 168° ahead of the Sun — Shukla Purnima, lasting until 00:01. The month began with the new moon of 17 July with the Sun already in sidereal Karka, and the next new moon on 16 August came before the Sun reached Simha, so the month was Adhika Shravana of VS 2080.

Hindu months and the Sun’s sign

Each amanta month is named from the sidereal sign the Sun is in when the month begins.

Limits worth knowing

Tithi ends are typically within one or two minutes of published panchangs, but a tithi ending within minutes of sunrise can land on a different day in another almanac, and some regional calendars use other ayanamsas. Festivals follow their own rules (moonrise, midnight or afternoon tithi); this tool gives the plain sunrise tithi. For the birth star use the nakshatra finder; for the whole chart the kundli generator; for the Moon’s shape the moon phase calculator.